bombproof

/ˈbɑmˌpruf/
adjective
  1. Strong enough to resist damage from bombs or explosions.
    • They stored the documents in a bombproof underground vault.
    • The embassy was built with bombproof windows and reinforced walls.
    • The shelter was designed to be bombproof in case of an attack.
  2. Very safe or certain to succeed; not likely to fail.
    • Her business plan seemed bombproof, but the market changed unexpectedly.
    • He thought his alibi was bombproof until the video evidence appeared.
    • No investment is completely bombproof, but government bonds are close.
Antonyms
verb
  1. To make something resistant to bombs or explosions.
    • The military spent millions to bombproof the new headquarters.
    • They bombproofed the bunker with layers of steel and concrete.
    • Engineers are working to bombproof the airport's control tower.
What does "bombproof" mean? | whatsthatwordmean | whatsthatwordmean